It's relatively well understood how the first fish began to move on land and breathe in air, but how vertebrates switched from feeding via suction to evolve a tongue remains unclear. Seeking an answer, Krijn Michel at the University of Antwerp in Belgium and his colleagues looked to the mudskipper.

They captured high-speed X-ray footage of Atlantic mudskippers (Periophthalmus barbarus) out of water pouncing and chowing down on pieces of brown shrimp. The move takes less than half a second but, slowed down 50 times, they spotted that mudskippers carry water in their mouths, which they spit forwards to help grab food then suck it back to swallow, mimicking the action of a tongue.

...Russia's Deputy Prime Minister Dmitry Rogozin voiced disapproval of this decision, saying they would go toe-to-toe with US threats and could potentially cut off access to the ISS. He also quipped that the US should deliver its astronauts to the ISS via trampoline. At the time of that announcement, the United States had two astronauts onboard, leaving some to speculate about their fate. Rick Mastracchio returned to Earth just yesterday, but Steven Swanson is still onboard. Gregory Wiseman is currently scheduled to launch to the ISS on May 28 for Expedition 40 and that plan does not appear to have changed.